The Grin Reaper is an extremely fun and capable WD mask, properly built TGR can put TIki wielders to shame with Crowd Control or leave Pet builds in the dust with a Creeping Doom of dogs, fetishes, 15 Spider Queens and 8 Lob Blobs :D.

They can proc damage debuff from the following attacks, multiple casts will stack -

Mass ConfusionPiranhas

Note: that means you can have three MC and three Piranhas stacked at the same time for a nice big multiplier.

Q: Can they proc buffs?

No, They can cast Horrify and Soul Harvest but the WD will not get the Armor or Intel boost. They will also not buff mana regen or life per second.

Q: Can they proc effects from weapon and items?

In general no. The only item that seems to work with them is Frostburn gloves, the mimics can proc the freeze effect using cold attacks or using a cold weapon with any attack (i.e Rain of Toads).

Cinkrement confirmed that the following do not proc:strongarm braces, deadly rebirth, spider queens grasp, haunt of vaxo, goldskin

Q: Do passives transfer to the Mimics?

No, Passives such as Vision Quest, FS, Creeping Death and Bad Medicine do not transfer to the Mimics.

Q: What's the deal with Fire Bats?

Mimics seem to be able to cast Fire Bats but they will not deal any damage. Maybe a bug?

Q: Do mimics benefit from Big Bad Voodoo?

Only Slam Dance will boost them, they will actually get boosted twice if summoned after BBV is out for a total of 30%+30%=60% damage boost (as long as the WD stays in the BBV ring). They don't seem to benefit from the attack speed boost.

Q: Are mimics considered pets?

Yes, mimics are considered temporary pets and benefit from pets buff items such as Enforcer, Zuni 6p and TNT gloves.

Really sweet post with great information about a nice build a lot of Witch Doctors may not be aware of. I found a Grin Reaper while leveling, and completely underestimated it's potential. I'll be hanging on to it if I find another one after seeing this. Great work!